Home / 78,535.02-108,381.30-45,007.50

Finding the Fourth Proportional to 78,535.02, 108,381.30 and 45,007.50

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Solution

The fourth proportional to 78,535.02, 108,381.30 and 45,007.50 is: 62,112.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,535.02 : 108,381.30 = 45,007.50 : x
  2. Step 2: Convert to fraction form
    78,535.02/108,381.30 = 45,007.50/x
  3. Step 3: Cross multiply
    78,535.02x = 108,381.30 × 45,007.50
  4. Step 4: Simplify right side
    78,535.02x = 4,877,971,359.75
  5. Step 5: Solve for x
    x = 4,877,971,359.75/78,535.02
  6. Step 6: Final answer
    x = 62,112.05

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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.