Home / 76,038.60-113,964.48-42,688.74

Finding the Fourth Proportional to 76,038.60, 113,964.48 and 42,688.74

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Solution

The fourth proportional to 76,038.60, 113,964.48 and 42,688.74 is: 63,980.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,038.60 : 113,964.48 = 42,688.74 : x
  2. Step 2: Convert to fraction form
    76,038.60/113,964.48 = 42,688.74/x
  3. Step 3: Cross multiply
    76,038.60x = 113,964.48 × 42,688.74
  4. Step 4: Simplify right side
    76,038.60x = 4,865,000,055.96
  5. Step 5: Solve for x
    x = 4,865,000,055.96/76,038.60
  6. Step 6: Final answer
    x = 63,980.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.