Home / 75,430.52-113,193.42-42,172.40

Finding the Fourth Proportional to 75,430.52, 113,193.42 and 42,172.40

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Solution

The fourth proportional to 75,430.52, 113,193.42 and 42,172.40 is: 63,285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,430.52 : 113,193.42 = 42,172.40 : x
  2. Step 2: Convert to fraction form
    75,430.52/113,193.42 = 42,172.40/x
  3. Step 3: Cross multiply
    75,430.52x = 113,193.42 × 42,172.40
  4. Step 4: Simplify right side
    75,430.52x = 4,773,637,619.64
  5. Step 5: Solve for x
    x = 4,773,637,619.64/75,430.52
  6. Step 6: Final answer
    x = 63,285.23

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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.