Home / 87,840,686.90-121,220,159.40-48,684,991.56

Finding the Fourth Proportional to 87,840,686.90, 121,220,159.40 and 48,684,991.56

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Solution

The fourth proportional to 87,840,686.90, 121,220,159.40 and 48,684,991.56 is: 67,185,294.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,840,686.90 : 121,220,159.40 = 48,684,991.56 : x
  2. Step 2: Convert to fraction form
    87,840,686.90/121,220,159.40 = 48,684,991.56/x
  3. Step 3: Cross multiply
    87,840,686.90x = 121,220,159.40 × 48,684,991.56
  4. Step 4: Simplify right side
    87,840,686.90x = 5,901,602,437,290,855
  5. Step 5: Solve for x
    x = 5,901,602,437,290,855/87,840,686.90
  6. Step 6: Final answer
    x = 67,185,294.71

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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.