Home / 42,749.47-64,124.22-11,159.45

Finding the Fourth Proportional to 42,749.47, 64,124.22 and 11,159.45

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Solution

The fourth proportional to 42,749.47, 64,124.22 and 11,159.45 is: 16,739.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,749.47 : 64,124.22 = 11,159.45 : x
  2. Step 2: Convert to fraction form
    42,749.47/64,124.22 = 11,159.45/x
  3. Step 3: Cross multiply
    42,749.47x = 64,124.22 × 11,159.45
  4. Step 4: Simplify right side
    42,749.47x = 715,590,748.11
  5. Step 5: Solve for x
    x = 715,590,748.11/42,749.47
  6. Step 6: Final answer
    x = 16,739.17

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1.5x scale

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.