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Finding the Fourth Proportional to 115,510.48, 159,399.80 and 64,522.40

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Solution

The fourth proportional to 115,510.48, 159,399.80 and 64,522.40 is: 89,038.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,510.48 : 159,399.80 = 64,522.40 : x
  2. Step 2: Convert to fraction form
    115,510.48/159,399.80 = 64,522.40/x
  3. Step 3: Cross multiply
    115,510.48x = 159,399.80 × 64,522.40
  4. Step 4: Simplify right side
    115,510.48x = 10,284,856,535.91
  5. Step 5: Solve for x
    x = 10,284,856,535.91/115,510.48
  6. Step 6: Final answer
    x = 89,038.30

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1.5x scale

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.