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Finding the Fourth Proportional to 77,037.80, 115,595.10 and 43,783.40

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Solution

The fourth proportional to 77,037.80, 115,595.10 and 43,783.40 is: 65,696.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,037.80 : 115,595.10 = 43,783.40 : x
  2. Step 2: Convert to fraction form
    77,037.80/115,595.10 = 43,783.40/x
  3. Step 3: Cross multiply
    77,037.80x = 115,595.10 × 43,783.40
  4. Step 4: Simplify right side
    77,037.80x = 5,061,146,501.34
  5. Step 5: Solve for x
    x = 5,061,146,501.34/77,037.80
  6. Step 6: Final answer
    x = 65,696.92

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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.