Home / 72,689,512.80-109,034,269.20-52,282,178.40

Finding the Fourth Proportional to 72,689,512.80, 109,034,269.20 and 52,282,178.40

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Solution

The fourth proportional to 72,689,512.80, 109,034,269.20 and 52,282,178.40 is: 78,423,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,689,512.80 : 109,034,269.20 = 52,282,178.40 : x
  2. Step 2: Convert to fraction form
    72,689,512.80/109,034,269.20 = 52,282,178.40/x
  3. Step 3: Cross multiply
    72,689,512.80x = 109,034,269.20 × 52,282,178.40
  4. Step 4: Simplify right side
    72,689,512.80x = 5,700,549,114,028,025
  5. Step 5: Solve for x
    x = 5,700,549,114,028,025/72,689,512.80
  6. Step 6: Final answer
    x = 78,423,267.60

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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.