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Finding the Fourth Proportional to 70,498.48, 105,714.28 and 40,925.36

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Solution

The fourth proportional to 70,498.48, 105,714.28 and 40,925.36 is: 61,368.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,498.48 : 105,714.28 = 40,925.36 : x
  2. Step 2: Convert to fraction form
    70,498.48/105,714.28 = 40,925.36/x
  3. Step 3: Cross multiply
    70,498.48x = 105,714.28 × 40,925.36
  4. Step 4: Simplify right side
    70,498.48x = 4,326,394,966.14
  5. Step 5: Solve for x
    x = 4,326,394,966.14/70,498.48
  6. Step 6: Final answer
    x = 61,368.63

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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.