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Finding the Fourth Proportional to 74,713.60, 112,070.40 and 70,922.80

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Solution

The fourth proportional to 74,713.60, 112,070.40 and 70,922.80 is: 106,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,713.60 : 112,070.40 = 70,922.80 : x
  2. Step 2: Convert to fraction form
    74,713.60/112,070.40 = 70,922.80/x
  3. Step 3: Cross multiply
    74,713.60x = 112,070.40 × 70,922.80
  4. Step 4: Simplify right side
    74,713.60x = 7,948,346,565.12
  5. Step 5: Solve for x
    x = 7,948,346,565.12/74,713.60
  6. Step 6: Final answer
    x = 106,384.20

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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.