Home / 86,218,865.80-129,328,298.70-55,607,864.20

Finding the Fourth Proportional to 86,218,865.80, 129,328,298.70 and 55,607,864.20

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Solution

The fourth proportional to 86,218,865.80, 129,328,298.70 and 55,607,864.20 is: 83,411,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,218,865.80 : 129,328,298.70 = 55,607,864.20 : x
  2. Step 2: Convert to fraction form
    86,218,865.80/129,328,298.70 = 55,607,864.20/x
  3. Step 3: Cross multiply
    86,218,865.80x = 129,328,298.70 × 55,607,864.20
  4. Step 4: Simplify right side
    86,218,865.80x = 7,191,670,471,326,637
  5. Step 5: Solve for x
    x = 7,191,670,471,326,637/86,218,865.80
  6. Step 6: Final answer
    x = 83,411,796.30

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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.