Home / 87,717,547.11-121,012,216.78-52,890,889.78

Finding the Fourth Proportional to 87,717,547.11, 121,012,216.78 and 52,890,889.78

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Solution

The fourth proportional to 87,717,547.11, 121,012,216.78 and 52,890,889.78 is: 72,966,516.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,717,547.11 : 121,012,216.78 = 52,890,889.78 : x
  2. Step 2: Convert to fraction form
    87,717,547.11/121,012,216.78 = 52,890,889.78/x
  3. Step 3: Cross multiply
    87,717,547.11x = 121,012,216.78 × 52,890,889.78
  4. Step 4: Simplify right side
    87,717,547.11x = 6,400,443,819,744,447
  5. Step 5: Solve for x
    x = 6,400,443,819,744,447/87,717,547.11
  6. Step 6: Final answer
    x = 72,966,516.17

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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.