Home / 72,768,001.20-109,152,001.80-48,428,003.40

Finding the Fourth Proportional to 72,768,001.20, 109,152,001.80 and 48,428,003.40

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Solution

The fourth proportional to 72,768,001.20, 109,152,001.80 and 48,428,003.40 is: 72,642,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768,001.20 : 109,152,001.80 = 48,428,003.40 : x
  2. Step 2: Convert to fraction form
    72,768,001.20/109,152,001.80 = 48,428,003.40/x
  3. Step 3: Cross multiply
    72,768,001.20x = 109,152,001.80 × 48,428,003.40
  4. Step 4: Simplify right side
    72,768,001.20x = 5,286,013,514,287,206
  5. Step 5: Solve for x
    x = 5,286,013,514,287,206/72,768,001.20
  6. Step 6: Final answer
    x = 72,642,005.10

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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.