Home / 70,123,987.60-105,185,979.78-19,006,005.40

Finding the Fourth Proportional to 70,123,987.60, 105,185,979.78 and 19,006,005.40

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Solution

The fourth proportional to 70,123,987.60, 105,185,979.78 and 19,006,005.40 is: 28,509,007.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,123,987.60 : 105,185,979.78 = 19,006,005.40 : x
  2. Step 2: Convert to fraction form
    70,123,987.60/105,185,979.78 = 19,006,005.40/x
  3. Step 3: Cross multiply
    70,123,987.60x = 105,185,979.78 × 19,006,005.40
  4. Step 4: Simplify right side
    70,123,987.60x = 1,999,165,299,702,970.75
  5. Step 5: Solve for x
    x = 1,999,165,299,702,970.75/70,123,987.60
  6. Step 6: Final answer
    x = 28,509,007.66

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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.