Home / 84,001,870.60-126,002,805.90-61,043,619.40

Finding the Fourth Proportional to 84,001,870.60, 126,002,805.90 and 61,043,619.40

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Solution

The fourth proportional to 84,001,870.60, 126,002,805.90 and 61,043,619.40 is: 91,565,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,001,870.60 : 126,002,805.90 = 61,043,619.40 : x
  2. Step 2: Convert to fraction form
    84,001,870.60/126,002,805.90 = 61,043,619.40/x
  3. Step 3: Cross multiply
    84,001,870.60x = 126,002,805.90 × 61,043,619.40
  4. Step 4: Simplify right side
    84,001,870.60x = 7,691,667,326,691,675
  5. Step 5: Solve for x
    x = 7,691,667,326,691,675/84,001,870.60
  6. Step 6: Final answer
    x = 91,565,429.10

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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.