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Finding the Fourth Proportional to 77,360.72, 116,041.08 and 21,955.28

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Solution

The fourth proportional to 77,360.72, 116,041.08 and 21,955.28 is: 32,932.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,360.72 : 116,041.08 = 21,955.28 : x
  2. Step 2: Convert to fraction form
    77,360.72/116,041.08 = 21,955.28/x
  3. Step 3: Cross multiply
    77,360.72x = 116,041.08 × 21,955.28
  4. Step 4: Simplify right side
    77,360.72x = 2,547,714,402.90
  5. Step 5: Solve for x
    x = 2,547,714,402.90/77,360.72
  6. Step 6: Final answer
    x = 32,932.92

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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.