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Finding the Fourth Proportional to 76,859.04, 106,066.08 and 42,869.69

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Solution

The fourth proportional to 76,859.04, 106,066.08 and 42,869.69 is: 59,160.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,859.04 : 106,066.08 = 42,869.69 : x
  2. Step 2: Convert to fraction form
    76,859.04/106,066.08 = 42,869.69/x
  3. Step 3: Cross multiply
    76,859.04x = 106,066.08 × 42,869.69
  4. Step 4: Simplify right side
    76,859.04x = 4,547,019,224.44
  5. Step 5: Solve for x
    x = 4,547,019,224.44/76,859.04
  6. Step 6: Final answer
    x = 59,160.50

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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.