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Finding the Fourth Proportional to 105,775.60, 145,979.55 and 58,038.28

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Solution

The fourth proportional to 105,775.60, 145,979.55 and 58,038.28 is: 80,097.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,775.60 : 145,979.55 = 58,038.28 : x
  2. Step 2: Convert to fraction form
    105,775.60/145,979.55 = 58,038.28/x
  3. Step 3: Cross multiply
    105,775.60x = 145,979.55 × 58,038.28
  4. Step 4: Simplify right side
    105,775.60x = 8,472,401,997.17
  5. Step 5: Solve for x
    x = 8,472,401,997.17/105,775.60
  6. Step 6: Final answer
    x = 80,097.89

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1.5x scale

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.