Home / 72,587,766.40-100,171,072-39,992,718.08

Finding the Fourth Proportional to 72,587,766.40, 100,171,072 and 39,992,718.08

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Solution

The fourth proportional to 72,587,766.40, 100,171,072 and 39,992,718.08 is: 55,189,925.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,587,766.40 : 100,171,072 = 39,992,718.08 : x
  2. Step 2: Convert to fraction form
    72,587,766.40/100,171,072 = 39,992,718.08/x
  3. Step 3: Cross multiply
    72,587,766.40x = 100,171,072 × 39,992,718.08
  4. Step 4: Simplify right side
    72,587,766.40x = 4,006,113,442,267,381.50
  5. Step 5: Solve for x
    x = 4,006,113,442,267,381.50/72,587,766.40
  6. Step 6: Final answer
    x = 55,189,925.81

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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.