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Finding the Fourth Proportional to 76,038.64, 104,929.07 and 42,045.10

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Solution

The fourth proportional to 76,038.64, 104,929.07 and 42,045.10 is: 58,019.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,038.64 : 104,929.07 = 42,045.10 : x
  2. Step 2: Convert to fraction form
    76,038.64/104,929.07 = 42,045.10/x
  3. Step 3: Cross multiply
    76,038.64x = 104,929.07 × 42,045.10
  4. Step 4: Simplify right side
    76,038.64x = 4,411,752,768.51
  5. Step 5: Solve for x
    x = 4,411,752,768.51/76,038.64
  6. Step 6: Final answer
    x = 58,019.88

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1.5x scale

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.