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Finding the Fourth Proportional to 93,316.38, 128,779.84 and 53,031.84

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Solution

The fourth proportional to 93,316.38, 128,779.84 and 53,031.84 is: 73,185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,316.38 : 128,779.84 = 53,031.84 : x
  2. Step 2: Convert to fraction form
    93,316.38/128,779.84 = 53,031.84/x
  3. Step 3: Cross multiply
    93,316.38x = 128,779.84 × 53,031.84
  4. Step 4: Simplify right side
    93,316.38x = 6,829,431,870.11
  5. Step 5: Solve for x
    x = 6,829,431,870.11/93,316.38
  6. Step 6: Final answer
    x = 73,185.78

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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.