Home / 70,123,789.02-105,185,683.80-19,005,807.90

Finding the Fourth Proportional to 70,123,789.02, 105,185,683.80 and 19,005,807.90

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Solution

The fourth proportional to 70,123,789.02, 105,185,683.80 and 19,005,807.90 is: 28,508,711.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,123,789.02 : 105,185,683.80 = 19,005,807.90 : x
  2. Step 2: Convert to fraction form
    70,123,789.02/105,185,683.80 = 19,005,807.90/x
  3. Step 3: Cross multiply
    70,123,789.02x = 105,185,683.80 × 19,005,807.90
  4. Step 4: Simplify right side
    70,123,789.02x = 1,999,138,900,132,941.75
  5. Step 5: Solve for x
    x = 1,999,138,900,132,941.75/70,123,789.02
  6. Step 6: Final answer
    x = 28,508,711.92

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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.