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Finding the Fourth Proportional to 66,186, 98,802.48 and 56,724

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Solution

The fourth proportional to 66,186, 98,802.48 and 56,724 is: 84,677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,186 : 98,802.48 = 56,724 : x
  2. Step 2: Convert to fraction form
    66,186/98,802.48 = 56,724/x
  3. Step 3: Cross multiply
    66,186x = 98,802.48 × 56,724
  4. Step 4: Simplify right side
    66,186x = 5,604,471,875.52
  5. Step 5: Solve for x
    x = 5,604,471,875.52/66,186
  6. Step 6: Final answer
    x = 84,677.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.