Home / 98,580.24-136,025-56,139.60

Finding the Fourth Proportional to 98,580.24, 136,025 and 56,139.60

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Solution

The fourth proportional to 98,580.24, 136,025 and 56,139.60 is: 77,463.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,580.24 : 136,025 = 56,139.60 : x
  2. Step 2: Convert to fraction form
    98,580.24/136,025 = 56,139.60/x
  3. Step 3: Cross multiply
    98,580.24x = 136,025 × 56,139.60
  4. Step 4: Simplify right side
    98,580.24x = 7,636,389,090
  5. Step 5: Solve for x
    x = 7,636,389,090/98,580.24
  6. Step 6: Final answer
    x = 77,463.69

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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.