Home / 78,501.40-117,752.10-60,983.80

Finding the Fourth Proportional to 78,501.40, 117,752.10 and 60,983.80

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Solution

The fourth proportional to 78,501.40, 117,752.10 and 60,983.80 is: 91,475.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,501.40 : 117,752.10 = 60,983.80 : x
  2. Step 2: Convert to fraction form
    78,501.40/117,752.10 = 60,983.80/x
  3. Step 3: Cross multiply
    78,501.40x = 117,752.10 × 60,983.80
  4. Step 4: Simplify right side
    78,501.40x = 7,180,970,515.98
  5. Step 5: Solve for x
    x = 7,180,970,515.98/78,501.40
  6. Step 6: Final answer
    x = 91,475.70

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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.