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Finding the Fourth Proportional to 85,730.69, 118,308.24 and 47,490.23

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Solution

The fourth proportional to 85,730.69, 118,308.24 and 47,490.23 is: 65,536.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,730.69 : 118,308.24 = 47,490.23 : x
  2. Step 2: Convert to fraction form
    85,730.69/118,308.24 = 47,490.23/x
  3. Step 3: Cross multiply
    85,730.69x = 118,308.24 × 47,490.23
  4. Step 4: Simplify right side
    85,730.69x = 5,618,484,936.95
  5. Step 5: Solve for x
    x = 5,618,484,936.95/85,730.69
  6. Step 6: Final answer
    x = 65,536.45

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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.