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Finding the Fourth Proportional to 93,410.93, 128,909.93 and 53,130.49

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Solution

The fourth proportional to 93,410.93, 128,909.93 and 53,130.49 is: 73,321.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,410.93 : 128,909.93 = 53,130.49 : x
  2. Step 2: Convert to fraction form
    93,410.93/128,909.93 = 53,130.49/x
  3. Step 3: Cross multiply
    93,410.93x = 128,909.93 × 53,130.49
  4. Step 4: Simplify right side
    93,410.93x = 6,849,047,158.84
  5. Step 5: Solve for x
    x = 6,849,047,158.84/93,410.93
  6. Step 6: Final answer
    x = 73,321.69

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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.