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Finding the Fourth Proportional to 98,603.86, 147,799.12 and 39,374.40

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Solution

The fourth proportional to 98,603.86, 147,799.12 and 39,374.40 is: 59,019.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,603.86 : 147,799.12 = 39,374.40 : x
  2. Step 2: Convert to fraction form
    98,603.86/147,799.12 = 39,374.40/x
  3. Step 3: Cross multiply
    98,603.86x = 147,799.12 × 39,374.40
  4. Step 4: Simplify right side
    98,603.86x = 5,819,501,670.53
  5. Step 5: Solve for x
    x = 5,819,501,670.53/98,603.86
  6. Step 6: Final answer
    x = 59,019.00

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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.