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Finding the Fourth Proportional to 75,369.12, 112,948.10 and 56,637.20

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Solution

The fourth proportional to 75,369.12, 112,948.10 and 56,637.20 is: 84,876.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,369.12 : 112,948.10 = 56,637.20 : x
  2. Step 2: Convert to fraction form
    75,369.12/112,948.10 = 56,637.20/x
  3. Step 3: Cross multiply
    75,369.12x = 112,948.10 × 56,637.20
  4. Step 4: Simplify right side
    75,369.12x = 6,397,063,281.39
  5. Step 5: Solve for x
    x = 6,397,063,281.39/75,369.12
  6. Step 6: Final answer
    x = 84,876.45

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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.