Home / 74,730.30-103,129.76-42,905.35

Finding the Fourth Proportional to 74,730.30, 103,129.76 and 42,905.35

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Solution

The fourth proportional to 74,730.30, 103,129.76 and 42,905.35 is: 59,210.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,730.30 : 103,129.76 = 42,905.35 : x
  2. Step 2: Convert to fraction form
    74,730.30/103,129.76 = 42,905.35/x
  3. Step 3: Cross multiply
    74,730.30x = 103,129.76 × 42,905.35
  4. Step 4: Simplify right side
    74,730.30x = 4,424,817,862.94
  5. Step 5: Solve for x
    x = 4,424,817,862.94/74,730.30
  6. Step 6: Final answer
    x = 59,210.50

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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.