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Finding the Fourth Proportional to 93,038.40, 128,390.40 and 50,598.72

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Solution

The fourth proportional to 93,038.40, 128,390.40 and 50,598.72 is: 69,824.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,038.40 : 128,390.40 = 50,598.72 : x
  2. Step 2: Convert to fraction form
    93,038.40/128,390.40 = 50,598.72/x
  3. Step 3: Cross multiply
    93,038.40x = 128,390.40 × 50,598.72
  4. Step 4: Simplify right side
    93,038.40x = 6,496,389,900.29
  5. Step 5: Solve for x
    x = 6,496,389,900.29/93,038.40
  6. Step 6: Final answer
    x = 69,824.82

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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.