Home / 76,438.08-105,484-42,446.40

Finding the Fourth Proportional to 76,438.08, 105,484 and 42,446.40

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Solution

The fourth proportional to 76,438.08, 105,484 and 42,446.40 is: 58,575.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,438.08 : 105,484 = 42,446.40 : x
  2. Step 2: Convert to fraction form
    76,438.08/105,484 = 42,446.40/x
  3. Step 3: Cross multiply
    76,438.08x = 105,484 × 42,446.40
  4. Step 4: Simplify right side
    76,438.08x = 4,477,416,057.60
  5. Step 5: Solve for x
    x = 4,477,416,057.60/76,438.08
  6. Step 6: Final answer
    x = 58,575.73

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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.