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Finding the Fourth Proportional to 78,666.48, 108,547.56 and 45,126

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Solution

The fourth proportional to 78,666.48, 108,547.56 and 45,126 is: 62,266.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,666.48 : 108,547.56 = 45,126 : x
  2. Step 2: Convert to fraction form
    78,666.48/108,547.56 = 45,126/x
  3. Step 3: Cross multiply
    78,666.48x = 108,547.56 × 45,126
  4. Step 4: Simplify right side
    78,666.48x = 4,898,317,192.56
  5. Step 5: Solve for x
    x = 4,898,317,192.56/78,666.48
  6. Step 6: Final answer
    x = 62,266.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.