Home / 77,779,261.92-107,336,507.52-42,972,753.60

Finding the Fourth Proportional to 77,779,261.92, 107,336,507.52 and 42,972,753.60

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Solution

The fourth proportional to 77,779,261.92, 107,336,507.52 and 42,972,753.60 is: 59,303,022.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,779,261.92 : 107,336,507.52 = 42,972,753.60 : x
  2. Step 2: Convert to fraction form
    77,779,261.92/107,336,507.52 = 42,972,753.60/x
  3. Step 3: Cross multiply
    77,779,261.92x = 107,336,507.52 × 42,972,753.60
  4. Step 4: Simplify right side
    77,779,261.92x = 4,612,545,289,941,507
  5. Step 5: Solve for x
    x = 4,612,545,289,941,507/77,779,261.92
  6. Step 6: Final answer
    x = 59,303,022.12

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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.