Home / 76,312.13-105,316.05-42,323.72

Finding the Fourth Proportional to 76,312.13, 105,316.05 and 42,323.72

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Solution

The fourth proportional to 76,312.13, 105,316.05 and 42,323.72 is: 58,409.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,312.13 : 105,316.05 = 42,323.72 : x
  2. Step 2: Convert to fraction form
    76,312.13/105,316.05 = 42,323.72/x
  3. Step 3: Cross multiply
    76,312.13x = 105,316.05 × 42,323.72
  4. Step 4: Simplify right side
    76,312.13x = 4,457,367,011.71
  5. Step 5: Solve for x
    x = 4,457,367,011.71/76,312.13
  6. Step 6: Final answer
    x = 58,409.68

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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.