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Finding the Fourth Proportional to 47,064.93, 64,959.62 and 28,212.99

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Solution

The fourth proportional to 47,064.93, 64,959.62 and 28,212.99 is: 38,939.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,064.93 : 64,959.62 = 28,212.99 : x
  2. Step 2: Convert to fraction form
    47,064.93/64,959.62 = 28,212.99/x
  3. Step 3: Cross multiply
    47,064.93x = 64,959.62 × 28,212.99
  4. Step 4: Simplify right side
    47,064.93x = 1,832,704,968.40
  5. Step 5: Solve for x
    x = 1,832,704,968.40/47,064.93
  6. Step 6: Final answer
    x = 38,939.93

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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.