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Finding the Fourth Proportional to 93,412.22, 128,904.95 and 53,120.39

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Solution

The fourth proportional to 93,412.22, 128,904.95 and 53,120.39 is: 73,303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,412.22 : 128,904.95 = 53,120.39 : x
  2. Step 2: Convert to fraction form
    93,412.22/128,904.95 = 53,120.39/x
  3. Step 3: Cross multiply
    93,412.22x = 128,904.95 × 53,120.39
  4. Step 4: Simplify right side
    93,412.22x = 6,847,480,705.21
  5. Step 5: Solve for x
    x = 6,847,480,705.21/93,412.22
  6. Step 6: Final answer
    x = 73,303.91

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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.