Home / 85,412,557.60-128,118,836.40-53,163,930.40

Finding the Fourth Proportional to 85,412,557.60, 128,118,836.40 and 53,163,930.40

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Solution

The fourth proportional to 85,412,557.60, 128,118,836.40 and 53,163,930.40 is: 79,745,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,412,557.60 : 128,118,836.40 = 53,163,930.40 : x
  2. Step 2: Convert to fraction form
    85,412,557.60/128,118,836.40 = 53,163,930.40/x
  3. Step 3: Cross multiply
    85,412,557.60x = 128,118,836.40 × 53,163,930.40
  4. Step 4: Simplify right side
    85,412,557.60x = 6,811,300,901,298,587
  5. Step 5: Solve for x
    x = 6,811,300,901,298,587/85,412,557.60
  6. Step 6: Final answer
    x = 79,745,895.60

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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.