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Finding the Fourth Proportional to 61,830.40, 85,326.60 and 34,973.20

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Solution

The fourth proportional to 61,830.40, 85,326.60 and 34,973.20 is: 48,263.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,830.40 : 85,326.60 = 34,973.20 : x
  2. Step 2: Convert to fraction form
    61,830.40/85,326.60 = 34,973.20/x
  3. Step 3: Cross multiply
    61,830.40x = 85,326.60 × 34,973.20
  4. Step 4: Simplify right side
    61,830.40x = 2,984,144,247.12
  5. Step 5: Solve for x
    x = 2,984,144,247.12/61,830.40
  6. Step 6: Final answer
    x = 48,263.38

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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.