Home / 85,877,934.30-128,816,901.45-68,871,822.30

Finding the Fourth Proportional to 85,877,934.30, 128,816,901.45 and 68,871,822.30

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Solution

The fourth proportional to 85,877,934.30, 128,816,901.45 and 68,871,822.30 is: 103,307,733.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,877,934.30 : 128,816,901.45 = 68,871,822.30 : x
  2. Step 2: Convert to fraction form
    85,877,934.30/128,816,901.45 = 68,871,822.30/x
  3. Step 3: Cross multiply
    85,877,934.30x = 128,816,901.45 × 68,871,822.30
  4. Step 4: Simplify right side
    85,877,934.30x = 8,871,854,745,901,012
  5. Step 5: Solve for x
    x = 8,871,854,745,901,012/85,877,934.30
  6. Step 6: Final answer
    x = 103,307,733.45

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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.