Home / 99,804.24-137,725.02-56,779.70

Finding the Fourth Proportional to 99,804.24, 137,725.02 and 56,779.70

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Solution

The fourth proportional to 99,804.24, 137,725.02 and 56,779.70 is: 78,353.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,804.24 : 137,725.02 = 56,779.70 : x
  2. Step 2: Convert to fraction form
    99,804.24/137,725.02 = 56,779.70/x
  3. Step 3: Cross multiply
    99,804.24x = 137,725.02 × 56,779.70
  4. Step 4: Simplify right side
    99,804.24x = 7,819,984,629.47
  5. Step 5: Solve for x
    x = 7,819,984,629.47/99,804.24
  6. Step 6: Final answer
    x = 78,353.23

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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.