Home / 81,430.64-112,367.16-45,615.92

Finding the Fourth Proportional to 81,430.64, 112,367.16 and 45,615.92

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Solution

The fourth proportional to 81,430.64, 112,367.16 and 45,615.92 is: 62,945.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,430.64 : 112,367.16 = 45,615.92 : x
  2. Step 2: Convert to fraction form
    81,430.64/112,367.16 = 45,615.92/x
  3. Step 3: Cross multiply
    81,430.64x = 112,367.16 × 45,615.92
  4. Step 4: Simplify right side
    81,430.64x = 5,125,731,381.19
  5. Step 5: Solve for x
    x = 5,125,731,381.19/81,430.64
  6. Step 6: Final answer
    x = 62,945.98

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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.