Home / 78,416,002.80-117,624,004.20-74,888,809.20

Finding the Fourth Proportional to 78,416,002.80, 117,624,004.20 and 74,888,809.20

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Solution

The fourth proportional to 78,416,002.80, 117,624,004.20 and 74,888,809.20 is: 112,333,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,416,002.80 : 117,624,004.20 = 74,888,809.20 : x
  2. Step 2: Convert to fraction form
    78,416,002.80/117,624,004.20 = 74,888,809.20/x
  3. Step 3: Cross multiply
    78,416,002.80x = 117,624,004.20 × 74,888,809.20
  4. Step 4: Simplify right side
    78,416,002.80x = 8,808,721,607,873,799
  5. Step 5: Solve for x
    x = 8,808,721,607,873,799/78,416,002.80
  6. Step 6: Final answer
    x = 112,333,213.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.