Home / 70,007,019.84-105,010,530.24-18,889,038.72

Finding the Fourth Proportional to 70,007,019.84, 105,010,530.24 and 18,889,038.72

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Solution

The fourth proportional to 70,007,019.84, 105,010,530.24 and 18,889,038.72 is: 28,333,558.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,007,019.84 : 105,010,530.24 = 18,889,038.72 : x
  2. Step 2: Convert to fraction form
    70,007,019.84/105,010,530.24 = 18,889,038.72/x
  3. Step 3: Cross multiply
    70,007,019.84x = 105,010,530.24 × 18,889,038.72
  4. Step 4: Simplify right side
    70,007,019.84x = 1,983,547,971,711,090.75
  5. Step 5: Solve for x
    x = 1,983,547,971,711,090.75/70,007,019.84
  6. Step 6: Final answer
    x = 28,333,558.21

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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.