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Finding the Fourth Proportional to 76,335.66, 105,355.81 and 42,355.08

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Solution

The fourth proportional to 76,335.66, 105,355.81 and 42,355.08 is: 58,457.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,335.66 : 105,355.81 = 42,355.08 : x
  2. Step 2: Convert to fraction form
    76,335.66/105,355.81 = 42,355.08/x
  3. Step 3: Cross multiply
    76,335.66x = 105,355.81 × 42,355.08
  4. Step 4: Simplify right side
    76,335.66x = 4,462,353,761.01
  5. Step 5: Solve for x
    x = 4,462,353,761.01/76,335.66
  6. Step 6: Final answer
    x = 58,457.00

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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.