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Finding the Fourth Proportional to 61,440.96, 92,154.96 and 19,878.24

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Solution

The fourth proportional to 61,440.96, 92,154.96 and 19,878.24 is: 29,815.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,440.96 : 92,154.96 = 19,878.24 : x
  2. Step 2: Convert to fraction form
    61,440.96/92,154.96 = 19,878.24/x
  3. Step 3: Cross multiply
    61,440.96x = 92,154.96 × 19,878.24
  4. Step 4: Simplify right side
    61,440.96x = 1,831,878,412.07
  5. Step 5: Solve for x
    x = 1,831,878,412.07/61,440.96
  6. Step 6: Final answer
    x = 29,815.26

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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.