Home / 74,287,904.40-111,431,856.60-47,078,125.20

Finding the Fourth Proportional to 74,287,904.40, 111,431,856.60 and 47,078,125.20

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Solution

The fourth proportional to 74,287,904.40, 111,431,856.60 and 47,078,125.20 is: 70,617,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,287,904.40 : 111,431,856.60 = 47,078,125.20 : x
  2. Step 2: Convert to fraction form
    74,287,904.40/111,431,856.60 = 47,078,125.20/x
  3. Step 3: Cross multiply
    74,287,904.40x = 111,431,856.60 × 47,078,125.20
  4. Step 4: Simplify right side
    74,287,904.40x = 5,246,002,896,283,246
  5. Step 5: Solve for x
    x = 5,246,002,896,283,246/74,287,904.40
  6. Step 6: Final answer
    x = 70,617,187.80

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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.