Home / 42,961.86-64,430.28-14,880.78

Finding the Fourth Proportional to 42,961.86, 64,430.28 and 14,880.78

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Solution

The fourth proportional to 42,961.86, 64,430.28 and 14,880.78 is: 22,316.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,961.86 : 64,430.28 = 14,880.78 : x
  2. Step 2: Convert to fraction form
    42,961.86/64,430.28 = 14,880.78/x
  3. Step 3: Cross multiply
    42,961.86x = 64,430.28 × 14,880.78
  4. Step 4: Simplify right side
    42,961.86x = 958,772,822.02
  5. Step 5: Solve for x
    x = 958,772,822.02/42,961.86
  6. Step 6: Final answer
    x = 22,316.84

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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.