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Finding the Fourth Proportional to 60,667.60, 90,985.20 and 18,547.60

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Solution

The fourth proportional to 60,667.60, 90,985.20 and 18,547.60 is: 27,816.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,667.60 : 90,985.20 = 18,547.60 : x
  2. Step 2: Convert to fraction form
    60,667.60/90,985.20 = 18,547.60/x
  3. Step 3: Cross multiply
    60,667.60x = 90,985.20 × 18,547.60
  4. Step 4: Simplify right side
    60,667.60x = 1,687,557,095.52
  5. Step 5: Solve for x
    x = 1,687,557,095.52/60,667.60
  6. Step 6: Final answer
    x = 27,816.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.