Home / 72,687,509.60-109,182,896.40-61,350,101.60

Finding the Fourth Proportional to 72,687,509.60, 109,182,896.40 and 61,350,101.60

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Solution

The fourth proportional to 72,687,509.60, 109,182,896.40 and 61,350,101.60 is: 92,153,133.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,687,509.60 : 109,182,896.40 = 61,350,101.60 : x
  2. Step 2: Convert to fraction form
    72,687,509.60/109,182,896.40 = 61,350,101.60/x
  3. Step 3: Cross multiply
    72,687,509.60x = 109,182,896.40 × 61,350,101.60
  4. Step 4: Simplify right side
    72,687,509.60x = 6,698,381,787,122,275
  5. Step 5: Solve for x
    x = 6,698,381,787,122,275/72,687,509.60
  6. Step 6: Final answer
    x = 92,153,133.65

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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.