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Finding the Fourth Proportional to 93,031.60, 139,579.80 and 40,478.80

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Solution

The fourth proportional to 93,031.60, 139,579.80 and 40,478.80 is: 60,732.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,031.60 : 139,579.80 = 40,478.80 : x
  2. Step 2: Convert to fraction form
    93,031.60/139,579.80 = 40,478.80/x
  3. Step 3: Cross multiply
    93,031.60x = 139,579.80 × 40,478.80
  4. Step 4: Simplify right side
    93,031.60x = 5,650,022,808.24
  5. Step 5: Solve for x
    x = 5,650,022,808.24/93,031.60
  6. Step 6: Final answer
    x = 60,732.30

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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.