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Finding the Fourth Proportional to 66,300.48, 99,312.48 and 29,390.40

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Solution

The fourth proportional to 66,300.48, 99,312.48 and 29,390.40 is: 44,024.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,300.48 : 99,312.48 = 29,390.40 : x
  2. Step 2: Convert to fraction form
    66,300.48/99,312.48 = 29,390.40/x
  3. Step 3: Cross multiply
    66,300.48x = 99,312.48 × 29,390.40
  4. Step 4: Simplify right side
    66,300.48x = 2,918,833,512.19
  5. Step 5: Solve for x
    x = 2,918,833,512.19/66,300.48
  6. Step 6: Final answer
    x = 44,024.32

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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.