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Finding the Fourth Proportional to 76,570.60, 105,659.94 and 43,035.88

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Solution

The fourth proportional to 76,570.60, 105,659.94 and 43,035.88 is: 59,385.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,570.60 : 105,659.94 = 43,035.88 : x
  2. Step 2: Convert to fraction form
    76,570.60/105,659.94 = 43,035.88/x
  3. Step 3: Cross multiply
    76,570.60x = 105,659.94 × 43,035.88
  4. Step 4: Simplify right side
    76,570.60x = 4,547,168,498.65
  5. Step 5: Solve for x
    x = 4,547,168,498.65/76,570.60
  6. Step 6: Final answer
    x = 59,385.31

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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.