Home / 87,239,886.57-120,389,479.47-47,547,773.28

Finding the Fourth Proportional to 87,239,886.57, 120,389,479.47 and 47,547,773.28

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Solution

The fourth proportional to 87,239,886.57, 120,389,479.47 and 47,547,773.28 is: 65,615,074.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,239,886.57 : 120,389,479.47 = 47,547,773.28 : x
  2. Step 2: Convert to fraction form
    87,239,886.57/120,389,479.47 = 47,547,773.28/x
  3. Step 3: Cross multiply
    87,239,886.57x = 120,389,479.47 × 47,547,773.28
  4. Step 4: Simplify right side
    87,239,886.57x = 5,724,251,675,136,775
  5. Step 5: Solve for x
    x = 5,724,251,675,136,775/87,239,886.57
  6. Step 6: Final answer
    x = 65,615,074.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.