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Finding the Fourth Proportional to 93,555.76, 129,106.56 and 51,115

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Solution

The fourth proportional to 93,555.76, 129,106.56 and 51,115 is: 70,538.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,555.76 : 129,106.56 = 51,115 : x
  2. Step 2: Convert to fraction form
    93,555.76/129,106.56 = 51,115/x
  3. Step 3: Cross multiply
    93,555.76x = 129,106.56 × 51,115
  4. Step 4: Simplify right side
    93,555.76x = 6,599,281,814.40
  5. Step 5: Solve for x
    x = 6,599,281,814.40/93,555.76
  6. Step 6: Final answer
    x = 70,538.49

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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.