Home / 74,945.28-112,430.08-67,510.40

Finding the Fourth Proportional to 74,945.28, 112,430.08 and 67,510.40

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Solution

The fourth proportional to 74,945.28, 112,430.08 and 67,510.40 is: 101,276.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,945.28 : 112,430.08 = 67,510.40 : x
  2. Step 2: Convert to fraction form
    74,945.28/112,430.08 = 67,510.40/x
  3. Step 3: Cross multiply
    74,945.28x = 112,430.08 × 67,510.40
  4. Step 4: Simplify right side
    74,945.28x = 7,590,199,672.83
  5. Step 5: Solve for x
    x = 7,590,199,672.83/74,945.28
  6. Step 6: Final answer
    x = 101,276.55

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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.