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Finding the Fourth Proportional to 46,886.78, 70,308.90 and 20,220.17

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Solution

The fourth proportional to 46,886.78, 70,308.90 and 20,220.17 is: 30,321.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,886.78 : 70,308.90 = 20,220.17 : x
  2. Step 2: Convert to fraction form
    46,886.78/70,308.90 = 20,220.17/x
  3. Step 3: Cross multiply
    46,886.78x = 70,308.90 × 20,220.17
  4. Step 4: Simplify right side
    46,886.78x = 1,421,657,558.97
  5. Step 5: Solve for x
    x = 1,421,657,558.97/46,886.78
  6. Step 6: Final answer
    x = 30,321.07

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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.