Home / 76,319.68-105,319.58-42,322.68

Finding the Fourth Proportional to 76,319.68, 105,319.58 and 42,322.68

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Solution

The fourth proportional to 76,319.68, 105,319.58 and 42,322.68 is: 58,404.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,319.68 : 105,319.58 = 42,322.68 : x
  2. Step 2: Convert to fraction form
    76,319.68/105,319.58 = 42,322.68/x
  3. Step 3: Cross multiply
    76,319.68x = 105,319.58 × 42,322.68
  4. Step 4: Simplify right side
    76,319.68x = 4,457,406,592.93
  5. Step 5: Solve for x
    x = 4,457,406,592.93/76,319.68
  6. Step 6: Final answer
    x = 58,404.42

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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.